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Thread: TI-89 Calculator Problem... Log

  1. #1
    Join Date
    Oct 2003
    i have a ti-89, and i have no idea where Log is..

    i have a LN button, but no LOG!!

    if anybody here has this calculator and knows where it is..can you help me out?

  2. Lounge   -   #2
    backlash's Avatar usenet lover
    Join Date
    Aug 2003
    in your dreams
    it's probably under the catalog button (lets you select from a list of functions and instructions) pg. 465 of the manual (below)

    here's the manual for your calc:$8992book-eng.pdf
    Last edited by backlash; 01-23-2005 at 11:36 PM.

  3. Lounge   -   #3
    zedaxax's Avatar ___________
    Join Date
    Oct 2004
    I understand your dilemna,
    here is a possible solution
    (see attachment)
    (ps. you posted in the lounge)
    Attached Files Attached Files
    Last edited by zedaxax; 01-24-2005 at 04:05 AM.

  4. Lounge   -   #4
    Quote Originally Posted by zedaxax View Post
    I understand your dilemna,
    here is a possible solution
    (see attachment)
    (ps. you posted in the lounge)
    Umm .. why are you posting an exe file insted of a document or a PDF. I have the same problem as the guy that started this thread but i wonder about your post, is this a virus? has anyone used this yet?

  5. Lounge   -   #5
    Do you realize you're replying to a post from January 2005?
    emerly35 is away

  6. Lounge   -   #6
    Barbarossa's Avatar mostly harmless
    Join Date
    Jun 2002
    Over here!
    Well I've no idea, one wonders why you didn't use google and find this page...

    Base 10
    The TI-89 does not have a logarithm base 10 key. However, one can use logarithm base 10 from the catalog. Press CATALOG to access the catalog. To navigate to log( , press L, then , then press the blue down arrow on the thumb pad, then press the blue down arrow 5 times to select log( . Press . Enter the number of interest, then press the right parenthesis.

  7. Lounge   -   #7
    Rart's Avatar Hold The Line
    Join Date
    Jul 2009
    Another simple solution would just be to use the principles of base changing with logarithms.

    LN(Whatever number)/LN(Whatever base) will give you the log of that number to the specified base.

    Ie LN(100)/LN(10) Will give you Log(100), or 2.

  8. Lounge   -   #8
    try the manual maybe?


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